How many liters of acetylene under normal conditions can be obtained from 1 kg of technical calcium carbide containing 30 percent of impurities?
Acetylene is synthesized by the interaction of calcium carbide with water.
CaC2 + 2H2O = Ca (OH) 2 + C2H2 ↑;
Let’s calculate the molar amount of calcium carbide.
To do this, let’s summarize the molar weights of the elements that make up this molecule.
M CaC2 = 40 + 12 x 2 = 64 grams / mol;
N CaC2 = 1000 x 0.7 / 64 = 10.9375 mol;
Theoretically, the same amount of acetylene will be obtained.
Let’s define its volume. For this purpose, we multiply the molar amount of the substance by the volume of 1 mole of the substance (which is 22.4 liters).
V C2H2 = 10.9375 x 22.4 = 245 liters;
One of the components of a person's success in our time is receiving modern high-quality education, mastering the knowledge, skills and abilities necessary for life in society. A person today needs to study almost all his life, mastering everything new and new, acquiring the necessary professional qualities.